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cotton

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Posts posted by cotton

  1. Hello

     

    I've come across this a few times on recent projects and would like to see if there is a definitive way of dealing with the issue, and if it is actually an issue.

    I tend to build modular CMS sites where the content editors can build pages in whatever order they see fit using those blocks. Some of the modules will have ScrollTrigger elements in so they can have pinned/animated blocks where they need.

     

    As I understand, the order that the ScrollTrigger functions are placed in the scripts has a bearing on how and when these pinned sections are calculated. Now, if I am allowing the client to add a pin section in a different location each time (i.e. sometimes it will come after a horizontal scrolling carousel, sometimes before etc) how can I make sure that the order the pins are created is the order they are in the DOM? I seem to get a lot of pin starts and ends being offset incorrectly which obviously then has a knock-on effect with all the other ScrollTrigger calculations.

     

    Is there a really simple way to sort this that I've missed? Perhaps a ScrollTrigger.refresh(); once all content is loaded or would that cause some unsightly visual issues? Should I be adding a script tag directly into the module template code rather than in a main js file so then it is called on the page as and when needed?

     

    I'd offer up a pen but all the elements work fine individually, just not always when the order is more dynamic.

     

    Thanks in advance

  2. Hello

     

    Kind of following on from this thread, I'm getting an error where a section lower down the DOM is being triggered at the very top, on page load.

     

    To explain, I've got sections on a page which have colour attributes which are then used to change the background colour of the wrapping parent element as they are triggered. There is also a horizontal slider that does the same as each slide comes into view.

     

    However, on page load the first slide (orange), which is the 4th section down here, updates the wrapper background colour instead of the first DOM section.  Is it because it's a pinned element so it triggers the onEnter when the page loads and if so, can I delay that or something?

     

    The first section works as expected when scrolling back up the page.

     

    If it makes any odds the final site will be dynamic/flexible/CMS so needs to work wherever it may be placed on the page.

     

    Thanks

     

     

    See the Pen QWmRGmX by Cottonltd (@Cottonltd) on CodePen

  3. How to explain...

     

    I've done a pen with both states included as separate bars.

    See the Pen jOZwxZP by Cottonltd (@Cottonltd) on CodePen

     

    In the final site this would be a single bar but the class toggle would switch the style. So a black bar on a white background would grow to 100%, left to right then as the next section comes in the class would switch and it'd then look to be a white bar growing from left to right.

     

    Essentially I'm just trying to cover up the value jump back to zero and make it look more continuous.

     

  4. Brilliant, thanks again Jack.

    Really blows my mind how responsive, knowledgable and patient this forum is.

     

    The class toggle was to make the bar, which will be black and white on the full site,  look as though it fills in black from left to right and then class toggle would switch the background colours and look to fill in white left to right etc etc.

     

    I've tried to demonstrate it in this pen but obviously the toggle is not in the right place because it's applying the it to all the progress bars. Should I create a new scrolltrigger within that function just for this effect?

     

    See the Pen yLvXjJy by Cottonltd (@Cottonltd) on CodePen

     

  5. Hello

     

    I've set up a ScrollTrigger that clones an element as it's wrapper hits 200px below the window (with thanks to @Cassie)

     

     

     

    I'm trying to add a progress bar that shows how far you've scrolled down the cloned element and once the active element has ended it would reset the bar and begin showing the scroll progress of the next (cloned/active) element. So essentially, each cloned element is a page and as a new page comes into view the progress bar is affected/reset/ToggleClass etc.

     

    I've tried creating a gsap.utils.toArray to capture all the cloned elements with a ScrollTrigger.create inside it although I'm not sure if this is correct or efficient. The onLeave etc doesn't seem to be having any affect on the progress bar so something must be up.

     

    Any ideas?

    See the Pen rNJwwEO by Cottonltd (@Cottonltd) on CodePen

  6. I think/hope I've diluted this enough now and apologies again for making it more confusing than it ought to be.

     

    See the Pen YzeVaPp by Cottonltd (@Cottonltd) on CodePen

     

    What I'm trying to do is to change the colour of the .global_block and background colour as sections scroll into view. This will be affected by both vertical and horizontal scrolling sections. However, as you noted, the first of the horizontal sections is already in view (i.e. has past 'left center') then it is triggering the colour change on page load (the block should be black on load).

     

    I have three triggers working here:

    1. The one that pins the horizontal section at 'top top'

    2. one that changes the background colour (using a function that grabs the first and last slide colour attributes) as (1) reaches 'top center' and leaves at 'bottom center' — this has been removed for now to simplify the pen.

    3. one that changes the colours as each slide section reaches 'left center'

     

    So I guess my questions would now be:

    – Can I make the first slide section start at 'left left' while the rest start at 'left center'

    – Can I ignore the first and last slides of the horizontal section and use trigger (2) to update the colours onEnter and onLeave using another colour grab function

    – Can I make the horizontal slides only trigger when that section comes into view rather than on page load?

    – Any other options available

     

    Thanks

     

  7. Yeah I see it and thought I'd fixed it on the fork but actually hadn't.

    More speed, less haste required!

     

    I've spent a bit more time on it and the above fork now acts more like the full site.

    The log shows at 0 and the start marker shows at load, as well as the incorrect colour var, and disappears on initial scroll.

     

    I hope this makes more sense and apologies for going round in circles!

  8. Thanks, I see my demo was not on point.

    It certainly is off at the start in there, on the full site it starts at zero.

     

    I've forked the demo to include a left margin on the slides so the start point is inside the viewport and included a log of where the carousel container begins (0):

    See the Pen xxYdbaJ by Cottonltd (@Cottonltd) on CodePen

     

    On my local site, with the markers on the 'vertical position' ones show at first load (see screenshot attached), but then disappear to the horizontal section as soon as you begin scrolling and then reappear in place on the horizontal section. Feels like it's loading that carousel section first before the rest of the triggers are applied?

     

     

    Screenshot 2022-05-18 at 16.09.30.png

  9. Sorry @GreenSock, kitchen sink demo as I wasn't sure which element may be causing issues.

    I've reduced it down to core now and the onEnters that may be the issue. 

     

    I think I've narrowed it down to the following that seems to be triggering too early (line 93 in codepen):

     

    studysections.forEach((sct, i) => {
      const color = sct.getAttribute("data-color");
      const seccolor = sct.getAttribute("data-secondcolor");
      const textcolor = sct.getAttribute("data-text");
    
      ScrollTrigger.create({
        containerAnimation: hCarousel,
        trigger: sct,
        start: "left center",
        end: "right center",
        scrub: true,
        onEnter: () => {
          site_wrapper.style.backgroundColor = color;
          site_wrapper.style.setProperty("--copycolor", textcolor);
          document.body.style.setProperty("--secondcolor", seccolor);
        },
        onEnterBack: () => {
          site_wrapper.style.backgroundColor = color;
          site_wrapper.style.setProperty("--copycolor", textcolor);
          document.body.style.setProperty("--secondcolor", seccolor);
        }
      });
    });

    Its just the css vars that appear to be a problem, the secondary colour change early too but the background-color inline style is fine. Perhaps it's not GSAP at all...

     

    It could well just be the containerAnimation problem, when you say 'pushed to the end' should I just call it at the end of the scripts or rearrange the DOM?

     

    Thank you.

     

     

  10. Hello

     

    I've got a site that when sections scroll into view the wrapper background colour is changed depending on the data-attribute on said section. There's also a horizontal scrolling section which also updates the colours as they scroll into/out of view.

     

    I'm using css vars to update the site text and menu/logo colours and these should be changed depending on the section data-copy attribute. However, this seems to update based on the first slide of the horizontal section on page load (there is a flash from black to white as you see the change on load), rather than as that section comes into view.

     

    The markers seem to be in the correct place so I'm not sure why this would be triggering on load. Is it something to do with using vars and setProperty rather than just inline hex, the ```site_wrapper.style.backgroundColor = color;``` seems to work fine and when scrolling backwards all is ok (but that is probably because the onLeave etc has been set specifically)?

     

    Thanks

    James

    See the Pen wvyJOeQ by Cottonltd (@Cottonltd) on CodePen

  11. Hi Cassie

     

    Thanks for getting back, really appreciate it. Apologies it's taken a while to reply.

     

    This is a really lovely cloning solution. I tried to get my head around the meta-infinite scroll examples but it just wasn't sinking in. This is super simple!

     

    I've implemented the ScrollTrigger.create cloning the whole container of elements (because the site uses dynamic content and animation options/speed) which works great but the cloned elements aren't animating still.

     

    What am I missing?

     

    See the Pen wvyaJGL by Cottonltd (@Cottonltd) on CodePen

  12. Hello

     

    I'm working on a loop that clones a section as the previous section reaches the bottom of the page so it gives the illusion of an infinite scroll. I've got a forEach utility set up looking for all elements with certain speed classes to add a ScrollTrigger parallax effect to them. This works fine on the first 'master' element but all the cloned ones, while having the inline transform applied, don't animate.

     

    In the clone function I've included a ScrollTrigger.refresh(true); but it doesn't appear to have any affect.

     

    Any help would be greatly appreciated.

     

     

     

     

    See the Pen popMjpw by Cottonltd (@Cottonltd) on CodePen

  13. Hello fellow GSAPers

     

    I'm using a bit of script to create an infinite loop scroll of images and it essentially fixes the wrapper and allows the image wrapper to scroll while cloning the image elements. Now that I've got it working I'm trying to integrate ScrollTrigger using the ScrollProxy but I'm not sure what's going on.

     

    The script already has the getter and setter functions so I've tried integrating them into the default ScrollerProxy code without luck. It's my first time using the proxy outside of locomotive scroll etc so just trying to get my head around what it should and shouldn't be doing.

     

    Any advice/guidance would be much appreciated.

    See the Pen PoONZjg by Cottonltd (@Cottonltd) on CodePen

  14. I've created a scrollable 'carousel' that goes horizontal as you scroll.

    I'd like each slide as it enters to affect the .dot pagination that it corresponds to by adding an active class to it.

     

    The slide count is dynamic so I've added an individual id to each which is also added as a data-panel attribute to the .dots.

     

    Sure it's going to be something really simple but I can't see the wood for the trees so any guidance would be appreciated.

     

    See the Pen OJjbZGe by Cottonltd (@Cottonltd) on CodePen

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